Vulnerability-Lookup

CNVD-2021-93920

Vulnerability from cnvd - Published: 2021-12-03

Title

Tcpreplay缓冲区溢出漏洞（CNVD-2021-93920）

Description

Tcpreplay是一套用于UNIX操作系统的GPLv3许可实用程序，用于编辑和重放由tcpdump和Ethereal/Wireshark等工具捕获的网络流量。 Tcpreplay 4.3.2版中的checksum.c中的do_checksum函数存在缓冲区溢出漏洞。攻击者可通过将特制pcap文件发送到tcpreplay-edit二进制文件利用该漏洞导致拒绝服务。

Severity

中

Patch Name

Tcpreplay缓冲区溢出漏洞（CNVD-2021-93920）的补丁

Patch Description

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://github.com/appneta/tcpreplay/commit/b763db764f46e7d72f5a8cea13dd917da002c48c

Reference

https://nvd.nist.gov/vuln/detail/CVE-2020-18976

Impacted products

Name
Tcpreplay Tcpreplay 4.3.2

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-18976",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-18976"
    }
  },
  "description": "Tcpreplay\u662f\u4e00\u5957\u7528\u4e8eUNIX\u64cd\u4f5c\u7cfb\u7edf\u7684GPLv3\u8bb8\u53ef\u5b9e\u7528\u7a0b\u5e8f\uff0c\u7528\u4e8e\u7f16\u8f91\u548c\u91cd\u653e\u7531tcpdump\u548cEthereal/Wireshark\u7b49\u5de5\u5177\u6355\u83b7\u7684\u7f51\u7edc\u6d41\u91cf\u3002\n\nTcpreplay 4.3.2\u7248\u4e2d\u7684checksum.c\u4e2d\u7684do_checksum\u51fd\u6570\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5c06\u7279\u5236pcap\u6587\u4ef6\u53d1\u9001\u5230tcpreplay-edit\u4e8c\u8fdb\u5236\u6587\u4ef6\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://github.com/appneta/tcpreplay/commit/b763db764f46e7d72f5a8cea13dd917da002c48c",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-93920",
  "openTime": "2021-12-03",
  "patchDescription": "Tcpreplay\u662f\u4e00\u5957\u7528\u4e8eUNIX\u64cd\u4f5c\u7cfb\u7edf\u7684GPLv3\u8bb8\u53ef\u5b9e\u7528\u7a0b\u5e8f\uff0c\u7528\u4e8e\u7f16\u8f91\u548c\u91cd\u653e\u7531tcpdump\u548cEthereal/Wireshark\u7b49\u5de5\u5177\u6355\u83b7\u7684\u7f51\u7edc\u6d41\u91cf\u3002\r\n\r\nTcpreplay 4.3.2\u7248\u4e2d\u7684checksum.c\u4e2d\u7684do_checksum\u51fd\u6570\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5c06\u7279\u5236pcap\u6587\u4ef6\u53d1\u9001\u5230tcpreplay-edit\u4e8c\u8fdb\u5236\u6587\u4ef6\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Tcpreplay\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff08CNVD-2021-93920\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Tcpreplay Tcpreplay 4.3.2"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-18976",
  "serverity": "\u4e2d",
  "submitTime": "2021-08-26",
  "title": "Tcpreplay\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff08CNVD-2021-93920\uff09"
}

CVE-2020-18976 (GCVE-0-2020-18976)

Vulnerability from cvelistv5 – Published: 2021-08-25 15:54 – Updated: 2024-08-04 14:08

Summary

Buffer Overflow in Tcpreplay v4.3.2 allows attackers to cause a Denial of Service via the 'do_checksum' function in 'checksum.c'. It can be triggered by sending a crafted pcap file to the 'tcpreplay-edit' binary. This issue is different than CVE-2019-8381.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

1 reference

URL	Tags
https://github.com/appneta/tcpreplay/issues/556	x_refsource_MISC

Show details on NVD website

JSON

To clipboard

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        "providerMetadata": {
          "dateUpdated": "2024-08-04T14:08:30.547Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/appneta/tcpreplay/issues/556"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
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          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Buffer Overflow in Tcpreplay v4.3.2 allows attackers to cause a Denial of Service via the \u0027do_checksum\u0027 function in \u0027checksum.c\u0027. It can be triggered by sending a crafted pcap file to the \u0027tcpreplay-edit\u0027 binary. This issue is different than CVE-2019-8381."
        }
      ],
      "problemTypes": [
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          "descriptions": [
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              "description": "n/a",
              "lang": "en",
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      ],
      "providerMetadata": {
        "dateUpdated": "2021-08-25T15:54:05.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/appneta/tcpreplay/issues/556"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2020-18976",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
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                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
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                        ]
                      }
                    }
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                },
                "vendor_name": "n/a"
              }
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        },
        "data_format": "MITRE",
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        "data_version": "4.0",
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            }
          ]
        },
        "problemtype": {
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        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/appneta/tcpreplay/issues/556",
              "refsource": "MISC",
              "url": "https://github.com/appneta/tcpreplay/issues/556"
            }
          ]
        }
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    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2020-18976",
    "datePublished": "2021-08-25T15:54:05.000Z",
    "dateReserved": "2020-08-13T00:00:00.000Z",
    "dateUpdated": "2024-08-04T14:08:30.547Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CNVD-2021-93920

CVE-2020-18976 (GCVE-0-2020-18976)

Tags

Sightings

Nomenclature

Related by attack behaviour